./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2291f924dd9adb1923bbd2b3119647838e71c665 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:01:04,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:01:04,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:01:05,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:01:05,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:01:05,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:01:05,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:01:05,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:01:05,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:01:05,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:01:05,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:01:05,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:01:05,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:01:05,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:01:05,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:01:05,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:01:05,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:01:05,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:01:05,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:01:05,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:01:05,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:01:05,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:01:05,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:01:05,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:01:05,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:01:05,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:01:05,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:01:05,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:01:05,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:01:05,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:01:05,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:01:05,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:01:05,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:01:05,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:01:05,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:01:05,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:01:05,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:01:05,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:01:05,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:01:05,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:01:05,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:01:05,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:01:05,248 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:01:05,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:01:05,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:01:05,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:01:05,249 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:01:05,250 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:01:05,250 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:01:05,250 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:01:05,250 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:01:05,251 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:01:05,251 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:01:05,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:01:05,251 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:01:05,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:01:05,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:01:05,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:01:05,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:01:05,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:01:05,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:01:05,253 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:01:05,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:01:05,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:01:05,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:01:05,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:01:05,254 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:01:05,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:01:05,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:01:05,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:01:05,255 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:01:05,256 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:01:05,256 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2291f924dd9adb1923bbd2b3119647838e71c665 [2020-11-28 03:01:05,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:01:05,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:01:05,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:01:05,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:01:05,666 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:01:05,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2020-11-28 03:01:05,739 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/data/cd2d508e1/011485032b2e455bae2f32d53d0866ce/FLAG0c7144f61 [2020-11-28 03:01:06,266 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:01:06,268 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2020-11-28 03:01:06,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/data/cd2d508e1/011485032b2e455bae2f32d53d0866ce/FLAG0c7144f61 [2020-11-28 03:01:06,619 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/data/cd2d508e1/011485032b2e455bae2f32d53d0866ce [2020-11-28 03:01:06,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:01:06,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:01:06,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:01:06,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:01:06,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:01:06,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:06" (1/1) ... [2020-11-28 03:01:06,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3a4e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:06, skipping insertion in model container [2020-11-28 03:01:06,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:06" (1/1) ... [2020-11-28 03:01:06,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:01:06,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:01:06,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:01:06,888 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:01:06,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:01:06,935 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:01:06,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:06 WrapperNode [2020-11-28 03:01:06,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:01:06,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:01:06,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:01:06,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:01:06,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:06" (1/1) ... [2020-11-28 03:01:06,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:06" (1/1) ... [2020-11-28 03:01:06,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:01:06,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:01:06,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:01:06,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:01:06,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:06" (1/1) ... [2020-11-28 03:01:06,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:06" (1/1) ... [2020-11-28 03:01:07,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:06" (1/1) ... [2020-11-28 03:01:07,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:06" (1/1) ... [2020-11-28 03:01:07,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:06" (1/1) ... [2020-11-28 03:01:07,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:06" (1/1) ... [2020-11-28 03:01:07,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:06" (1/1) ... [2020-11-28 03:01:07,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:01:07,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:01:07,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:01:07,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:01:07,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:07,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:01:07,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:01:07,298 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:01:07,298 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:01:07,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:07 BoogieIcfgContainer [2020-11-28 03:01:07,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:01:07,302 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:01:07,302 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:01:07,306 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:01:07,307 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:01:07,307 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:01:06" (1/3) ... [2020-11-28 03:01:07,308 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7df3a259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:01:07, skipping insertion in model container [2020-11-28 03:01:07,308 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:01:07,309 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:06" (2/3) ... [2020-11-28 03:01:07,309 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7df3a259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:01:07, skipping insertion in model container [2020-11-28 03:01:07,309 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:01:07,309 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:07" (3/3) ... [2020-11-28 03:01:07,311 INFO L373 chiAutomizerObserver]: Analyzing ICFG Pure2Phase-1.c [2020-11-28 03:01:07,392 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:01:07,392 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:01:07,393 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:01:07,393 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:01:07,393 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:01:07,393 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:01:07,393 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:01:07,393 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:01:07,408 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-11-28 03:01:07,446 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:01:07,446 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:01:07,447 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:01:07,454 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 03:01:07,454 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:01:07,454 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:01:07,454 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-11-28 03:01:07,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:01:07,456 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:01:07,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:01:07,457 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 03:01:07,457 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:01:07,465 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 11#L20true assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 3#L21true assume !!(main_~z~0 <= 1073741823); 7#L24-2true [2020-11-28 03:01:07,465 INFO L796 eck$LassoCheckResult]: Loop: 7#L24-2true assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 9#L24true assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 7#L24-2true [2020-11-28 03:01:07,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:07,473 INFO L82 PathProgramCache]: Analyzing trace with hash 30949, now seen corresponding path program 1 times [2020-11-28 03:01:07,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:07,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658632501] [2020-11-28 03:01:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:07,614 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:07,635 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:07,667 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:07,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:07,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 1 times [2020-11-28 03:01:07,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:07,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800134574] [2020-11-28 03:01:07,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:07,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:07,699 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:07,701 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:07,703 INFO L82 PathProgramCache]: Analyzing trace with hash 29742639, now seen corresponding path program 1 times [2020-11-28 03:01:07,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:07,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198359046] [2020-11-28 03:01:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:07,715 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:07,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:07,725 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:07,846 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:01:07,847 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:01:07,848 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:01:07,848 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:01:07,848 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:01:07,848 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:07,849 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:01:07,849 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:01:07,849 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2020-11-28 03:01:07,849 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:01:07,850 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:01:07,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:07,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:07,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:07,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:08,051 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:01:08,053 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:08,066 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:08,066 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:08,083 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:01:08,083 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:08,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:08,131 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:08,139 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:01:08,139 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:08,187 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:08,187 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:08,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:01:08,240 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:08,293 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:01:08,296 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:01:08,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:01:08,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:01:08,296 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:01:08,297 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:01:08,297 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:08,297 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:01:08,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:01:08,297 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2020-11-28 03:01:08,297 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:01:08,297 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:01:08,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:08,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:08,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:08,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:08,457 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:01:08,464 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:08,475 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:01:08,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:08,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:08,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:08,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:08,491 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:01:08,491 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:08,507 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:08,558 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:01:08,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:08,561 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:08,561 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:08,561 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:08,567 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:01:08,568 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:08,578 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:08,621 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:01:08,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:08,624 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:01:08,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:08,625 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:08,625 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:08,628 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:01:08,628 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:08,632 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:01:08,638 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:01:08,638 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:08,648 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:01:08,648 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:01:08,648 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:01:08,649 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] [2020-11-28 03:01:08,690 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:01:08,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:08,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:01:08,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:08,823 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:01:08,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:08,868 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:01:08,869 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2020-11-28 03:01:08,935 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 29 states and 38 transitions. Complement of second has 8 states. [2020-11-28 03:01:08,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:01:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:01:08,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2020-11-28 03:01:08,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-28 03:01:08,940 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:08,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-28 03:01:08,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:08,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2020-11-28 03:01:08,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:08,942 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 38 transitions. [2020-11-28 03:01:08,946 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:01:08,950 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 10 states and 13 transitions. [2020-11-28 03:01:08,951 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-28 03:01:08,951 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-28 03:01:08,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2020-11-28 03:01:08,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:01:08,952 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-28 03:01:08,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2020-11-28 03:01:08,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 03:01:08,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 03:01:08,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2020-11-28 03:01:08,978 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-28 03:01:08,979 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2020-11-28 03:01:08,979 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:01:08,979 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2020-11-28 03:01:08,980 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:01:08,980 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:01:08,980 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:01:08,981 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 03:01:08,981 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:01:08,981 INFO L794 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 85#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 82#L21 assume !!(main_~z~0 <= 1073741823); 83#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 91#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 86#L27 [2020-11-28 03:01:08,981 INFO L796 eck$LassoCheckResult]: Loop: 86#L27 assume !!(main_~z~0 <= 1073741823); 87#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 88#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 86#L27 [2020-11-28 03:01:08,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:08,982 INFO L82 PathProgramCache]: Analyzing trace with hash 29742632, now seen corresponding path program 1 times [2020-11-28 03:01:08,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:08,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695115325] [2020-11-28 03:01:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:08,990 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:08,995 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:08,996 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:08,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:08,997 INFO L82 PathProgramCache]: Analyzing trace with hash 57342, now seen corresponding path program 1 times [2020-11-28 03:01:08,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:08,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059383071] [2020-11-28 03:01:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:09,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:09,006 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:09,007 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:09,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:09,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1299514487, now seen corresponding path program 1 times [2020-11-28 03:01:09,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:09,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441448291] [2020-11-28 03:01:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:09,017 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:09,023 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:09,025 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:09,151 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:01:09,151 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:01:09,151 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:01:09,151 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:01:09,151 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:01:09,151 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:09,152 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:01:09,152 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:01:09,152 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2020-11-28 03:01:09,152 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:01:09,152 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:01:09,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:09,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:09,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:09,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:09,288 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:01:09,288 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:09,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:09,297 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:09,303 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:01:09,303 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:09,335 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:09,335 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:09,339 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:01:09,339 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:09,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:09,375 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:01:09,381 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:01:09,381 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=530309120, ULTIMATE.start_main_~z~0=530309120} Honda state: {ULTIMATE.start_main_#t~nondet2=530309120, ULTIMATE.start_main_~z~0=530309120} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:09,407 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:09,407 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:09,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:01:09,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:01:09,502 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:01:09,503 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:01:09,503 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:01:09,503 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:01:09,504 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:01:09,504 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:01:09,504 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:09,504 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:01:09,504 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:01:09,504 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2020-11-28 03:01:09,504 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:01:09,504 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:01:09,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:09,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:09,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:09,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:09,687 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:01:09,687 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:09,698 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:01:09,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:09,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:09,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:09,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:09,707 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:01:09,707 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:09,713 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:09,762 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:01:09,764 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:09,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:09,764 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:09,764 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:09,767 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:01:09,768 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:01:09,773 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:09,822 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:01:09,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:09,824 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:01:09,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:09,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:09,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:09,826 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:01:09,826 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:09,830 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:09,870 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:01:09,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:09,872 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:01:09,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:09,873 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:09,873 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:09,874 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:01:09,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:09,877 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:01:09,882 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:01:09,882 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:09,889 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:01:09,889 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:01:09,890 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:01:09,890 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-11-28 03:01:09,922 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:01:09,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:09,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:01:09,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:09,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:01:09,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:10,023 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:01:10,024 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-11-28 03:01:10,064 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 15 states and 20 transitions. Complement of second has 6 states. [2020-11-28 03:01:10,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:01:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:01:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-28 03:01:10,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-28 03:01:10,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:10,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-28 03:01:10,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:10,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 6 letters. [2020-11-28 03:01:10,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:10,075 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2020-11-28 03:01:10,076 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:01:10,077 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 20 transitions. [2020-11-28 03:01:10,077 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-28 03:01:10,077 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-28 03:01:10,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2020-11-28 03:01:10,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:01:10,078 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2020-11-28 03:01:10,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2020-11-28 03:01:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-11-28 03:01:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 03:01:10,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2020-11-28 03:01:10,080 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2020-11-28 03:01:10,080 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2020-11-28 03:01:10,081 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:01:10,081 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2020-11-28 03:01:10,082 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:01:10,082 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:01:10,082 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:01:10,082 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:01:10,082 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:01:10,083 INFO L794 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 157#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 154#L21 assume !!(main_~z~0 <= 1073741823); 155#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 163#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 158#L27 assume !!(main_~z~0 <= 1073741823); 160#L24-2 [2020-11-28 03:01:10,083 INFO L796 eck$LassoCheckResult]: Loop: 160#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 165#L24 assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 160#L24-2 [2020-11-28 03:01:10,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:10,083 INFO L82 PathProgramCache]: Analyzing trace with hash 922021620, now seen corresponding path program 2 times [2020-11-28 03:01:10,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:10,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197748395] [2020-11-28 03:01:10,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:10,096 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:10,101 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:10,112 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:10,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:10,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 2 times [2020-11-28 03:01:10,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:10,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708749521] [2020-11-28 03:01:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:10,128 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:10,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:10,139 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:10,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:10,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1299514494, now seen corresponding path program 1 times [2020-11-28 03:01:10,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:10,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235197923] [2020-11-28 03:01:10,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:10,167 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:10,173 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:10,175 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:10,213 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:01:10,213 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:01:10,213 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:01:10,213 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:01:10,213 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:01:10,214 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:10,214 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:01:10,214 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:01:10,214 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2020-11-28 03:01:10,214 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:01:10,214 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:01:10,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:10,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:10,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:10,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:10,316 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:01:10,316 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:10,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:10,329 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:10,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:01:10,377 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:10,454 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:01:10,456 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:01:10,456 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:01:10,456 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:01:10,456 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:01:10,457 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:01:10,457 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:10,457 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:01:10,457 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:01:10,457 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2020-11-28 03:01:10,457 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:01:10,457 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:01:10,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:10,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:10,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:10,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:10,558 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:01:10,558 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:10,571 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:10,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:10,573 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:01:10,573 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:10,573 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:10,573 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:10,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:01:10,575 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:01:10,578 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:01:10,581 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:01:10,582 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:10,585 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:01:10,585 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:01:10,585 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:01:10,585 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:10,629 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:01:10,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:10,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:01:10,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:10,679 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:01:10,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:10,695 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:01:10,695 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-28 03:01:10,713 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 20 states and 27 transitions. Complement of second has 5 states. [2020-11-28 03:01:10,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:01:10,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:01:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-28 03:01:10,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-28 03:01:10,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:10,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-28 03:01:10,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:10,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-28 03:01:10,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:10,717 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 27 transitions. [2020-11-28 03:01:10,718 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:01:10,719 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 16 states and 21 transitions. [2020-11-28 03:01:10,719 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-28 03:01:10,719 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-28 03:01:10,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2020-11-28 03:01:10,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:01:10,720 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2020-11-28 03:01:10,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2020-11-28 03:01:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 03:01:10,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:01:10,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2020-11-28 03:01:10,725 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2020-11-28 03:01:10,726 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2020-11-28 03:01:10,726 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:01:10,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2020-11-28 03:01:10,728 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:01:10,728 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:01:10,728 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:01:10,729 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1] [2020-11-28 03:01:10,730 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:01:10,730 INFO L794 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~y~0, main_~z~0;havoc main_~y~0;havoc main_~z~0;main_~y~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~z~0 := main_#t~nondet1;havoc main_#t~nondet1; 235#L20 assume !!(-1073741823 <= main_~y~0 && main_~y~0 <= 1073741823); 232#L21 assume !!(main_~z~0 <= 1073741823); 233#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 242#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 236#L27 assume !!(main_~z~0 <= 1073741823); 237#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 246#L24 assume main_~y~0 >= 0;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 238#L27 assume !!(main_~z~0 <= 1073741823); 239#L24-2 [2020-11-28 03:01:10,730 INFO L796 eck$LassoCheckResult]: Loop: 239#L24-2 assume !!(main_~z~0 >= 0);main_~y~0 := main_~y~0 - 1; 244#L24 assume !(main_~y~0 >= 0);main_~z~0 := main_~z~0 - 1; 239#L24-2 [2020-11-28 03:01:10,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:10,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1630243461, now seen corresponding path program 3 times [2020-11-28 03:01:10,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:10,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078732221] [2020-11-28 03:01:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:10,748 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:10,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:10,771 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:10,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:10,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1611, now seen corresponding path program 3 times [2020-11-28 03:01:10,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:10,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528003426] [2020-11-28 03:01:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:10,780 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:10,784 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:10,785 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:10,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:10,787 INFO L82 PathProgramCache]: Analyzing trace with hash -999096369, now seen corresponding path program 2 times [2020-11-28 03:01:10,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:10,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47134874] [2020-11-28 03:01:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:10,802 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:10,819 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:10,821 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:01:10,848 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:01:10,848 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:01:10,848 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:01:10,848 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:01:10,848 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:01:10,848 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:10,848 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:01:10,848 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:01:10,848 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2020-11-28 03:01:10,849 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:01:10,849 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:01:10,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:10,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:10,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:10,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:10,936 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:01:10,936 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:10,939 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:10,940 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:10,944 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:01:10,944 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:10,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:01:10,997 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:11,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:01:11,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:01:11,094 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:01:11,096 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:01:11,096 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:01:11,096 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:01:11,096 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:01:11,096 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:01:11,096 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:11,097 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:01:11,097 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:01:11,097 INFO L133 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2020-11-28 03:01:11,097 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:01:11,097 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:01:11,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:11,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:11,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:11,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:01:11,271 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:01:11,271 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:11,275 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:01:11,276 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:01:11,277 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:01:11,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:01:11,277 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:01:11,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:01:11,279 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:01:11,279 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:11,282 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:01:11,285 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:01:11,285 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ad6c6e02-5cc6-4400-84c4-39c430c6f17e/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:01:11,288 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:01:11,289 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:01:11,289 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:01:11,289 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:01:11,331 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:01:11,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:11,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:01:11,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:11,371 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:01:11,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:11,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:11,385 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:01:11,385 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-28 03:01:11,399 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 18 states and 23 transitions. Complement of second has 5 states. [2020-11-28 03:01:11,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:01:11,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:01:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-28 03:01:11,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2020-11-28 03:01:11,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:11,402 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:01:11,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:11,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:01:11,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:11,437 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:01:11,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:11,457 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:01:11,457 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-28 03:01:11,477 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 18 states and 23 transitions. Complement of second has 5 states. [2020-11-28 03:01:11,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:01:11,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:01:11,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-28 03:01:11,478 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2020-11-28 03:01:11,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:11,479 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:01:11,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:11,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:01:11,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:11,510 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:01:11,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:11,521 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:01:11,521 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand 3 states. [2020-11-28 03:01:11,534 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 21 states and 27 transitions. Complement of second has 4 states. [2020-11-28 03:01:11,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:01:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:01:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-11-28 03:01:11,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 2 letters. [2020-11-28 03:01:11,536 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:11,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 2 letters. [2020-11-28 03:01:11,536 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:11,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 4 letters. [2020-11-28 03:01:11,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:01:11,537 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 27 transitions. [2020-11-28 03:01:11,539 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:01:11,539 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2020-11-28 03:01:11,539 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:01:11,539 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:01:11,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:01:11,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:01:11,539 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:01:11,539 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:01:11,539 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:01:11,540 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:01:11,540 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:01:11,540 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:01:11,540 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:01:11,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:01:11 BoogieIcfgContainer [2020-11-28 03:01:11,548 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:01:11,548 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:01:11,548 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:01:11,549 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:01:11,549 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:07" (3/4) ... [2020-11-28 03:01:11,553 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:01:11,553 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:01:11,555 INFO L168 Benchmark]: Toolchain (without parser) took 4929.57 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 52.3 MB in the beginning and 72.8 MB in the end (delta: -20.5 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:11,555 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 68.1 MB in the beginning and 68.0 MB in the end (delta: 70.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:11,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.80 ms. Allocated memory is still 86.0 MB. Free memory was 52.1 MB in the beginning and 64.9 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:11,557 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.95 ms. Allocated memory is still 86.0 MB. Free memory was 64.7 MB in the beginning and 63.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:11,557 INFO L168 Benchmark]: Boogie Preprocessor took 24.07 ms. Allocated memory is still 86.0 MB. Free memory was 63.5 MB in the beginning and 62.6 MB in the end (delta: 864.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:11,558 INFO L168 Benchmark]: RCFGBuilder took 287.69 ms. Allocated memory is still 86.0 MB. Free memory was 62.6 MB in the beginning and 54.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:11,559 INFO L168 Benchmark]: BuchiAutomizer took 4246.10 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 53.8 MB in the beginning and 72.8 MB in the end (delta: -19.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:11,559 INFO L168 Benchmark]: Witness Printer took 4.49 ms. Allocated memory is still 125.8 MB. Free memory is still 72.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:11,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 68.1 MB in the beginning and 68.0 MB in the end (delta: 70.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.80 ms. Allocated memory is still 86.0 MB. Free memory was 52.1 MB in the beginning and 64.9 MB in the end (delta: -12.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.95 ms. Allocated memory is still 86.0 MB. Free memory was 64.7 MB in the beginning and 63.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.07 ms. Allocated memory is still 86.0 MB. Free memory was 63.5 MB in the beginning and 62.6 MB in the end (delta: 864.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 287.69 ms. Allocated memory is still 86.0 MB. Free memory was 62.6 MB in the beginning and 54.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4246.10 ms. Allocated memory was 86.0 MB in the beginning and 125.8 MB in the end (delta: 39.8 MB). Free memory was 53.8 MB in the beginning and 72.8 MB in the end (delta: -19.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.49 ms. Allocated memory is still 125.8 MB. Free memory is still 72.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * z + 1 and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * z + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 50 SDtfs, 47 SDslu, 8 SDs, 0 SdLazy, 34 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf93 smp100 dnf100 smp100 tf113 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...